Weird things are happenning

Hi there I'm not sure if this is the correct group to be writing to,
but I'll give it a shot anyway.
The reason for my post is I have all these spots around my inner thigh
area, kinda like perfect circles of all different sizes, except a few.
And they are kind f reddish. I went to the clinic and the docter gave
me spme cream called ratio- NYSTATIN. This seems to be making it
spread more and get worse, would anyone have a reason why?
Also, I had a sinus infection at the time so she gave me some
antibiotics called ERYTHROMYCIN EC 333MG. Well, by the time I got by
percription I no longer had the infection in my sinuses, but I had a
bladder infection. So I asked the pharmasist if they would work for
that instead, and she said propbubly because it is used to treat a
variety of bacterial infections. Well, I am done my pills now and I
have the worst bladder or kidney infection I have ever had! Does
anyone know why? I can't get to my docter because he lives far away,
so that is the reason I am writing. And I don't know if I trust the
clinic docter anymore!
Thanks,
Chelsy